Your best friend, as a student, is often your university library. As a student, you probably have a sign-in I.D. and password to gain access to your school library's online databases. Most of these databases, like JSTOR and Academic Search Premier, allow you to specify things like "peer-reviewed journals only" and "full-text articles." For psychology, the psychINFO database is very useful. You can often do all the research you need to do from home, in your P.J.s! :-)
If you're not sure what your sign-in information is, contact the school library and ask how to get it. Librarians are also very helpful for getting your research pointed in the right direction. I think once you gain access to the databases, you'll find a whole world of research opens up for you!
Best of luck!